public static void GetObjectBySignedUrlWithWebRequest(string bucketName, string key)
{
try
{
var metadata = client.GetObjectMetadata(bucketName, key);
var etag = metadata.ETag;
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get);
req.AddQueryParam("param1", "value1");
req.ContentType = "text/html";
req.ContentMd5 = etag;
req.AddUserMetadata("mk1", "mv1");
req.ResponseHeaders.CacheControl = "No-Cache";
req.ResponseHeaders.ContentEncoding = "utf-8";
req.ResponseHeaders.ContentType = "text/html";
// Generates url signature for accessing specified object.
var uri = client.GeneratePresignedUri(req);
var webRequest = (HttpWebRequest)WebRequest.Create(uri);
webRequest.ContentType = "text/html";
webRequest.Headers.Add(HttpRequestHeader.ContentMd5, etag);
webRequest.Headers.Add("x-oss-meta-mk1", "mv1");
var resp = webRequest.GetResponse() as HttpWebResponse;
var output = resp.GetResponseStream();
var bufferSize = 2048;
var bytes = new byte[bufferSize];
try
{
using (StreamWriter outfile = new StreamWriter(fileToSave))
{
var length = 0;
do
{
length = output.Read(bytes, 0, bufferSize);
outfile.Write(bytes);
} while (length > 0);
}
output.Close();
Console.WriteLine("Get object by signatrue succeeded.");
}
catch (Exception ex)
{
Console.WriteLine("ex : " + ex.Message);
}
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
/// <summary>
/// 获取鉴权后的URL,文件过期时间默认设置为100年
/// </summary>
/// <param name="fileName">文件名,例如:Employee/dzzBack.jpg</param>
/// <returns></returns>
public static string GetFileUrl(string fileName)
{
var key = fileName;
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddYears(100)
};
return(client.GeneratePresignedUri(req).ToString());
}
private UploadFileOutDto UpOss(FileStream stream)
{
try
{
UploadFileOutDto dto = new UploadFileOutDto();
if (stream == null || stream.Length <= 0)
{
throw new Exception("文件不能为空!");
}
dto.FileName = GenerateFileName(stream.Name);
//获取该文件的输入流
using (var fs = stream)
{
OssClient ossClient = OssManager.GetInstance(_model.AccessId, _model.AccessKey, _model.EndPoint);
ossClient.SetBucketAcl(_model.BucketName, CannedAccessControlList.PublicRead);
//将该文件流保存到OSS中
var ret = ossClient.PutObject(_model.BucketName, dto.FileName, fs);
var uri = ossClient.GeneratePresignedUri(_model.BucketName, dto.FileName);
dto.FilePath = $"{uri.Scheme}://{uri.Host}/{dto.FileName}";
}
return(dto);
}
catch (OssException oe)
{
throw new Exception($"调用OSS上传时，访问服务器端时出错。错误码Code:{oe.ErrorCode},错误信息Message:{oe.Message}");
}
}
/// <summary>
/// 获取文件oss地址
/// </summary>
/// <param name="fileKey"></param>
/// <returns></returns>
public string GetFilePath(string fileKey)
{
OssClient ossClient = OssManager.GetInstance(_model.AccessId, _model.AccessKey, _model.EndPoint);
var uri = ossClient.GeneratePresignedUri(_model.BucketName, fileKey);
return($"{uri.Scheme}://{uri.Host}/{fileKey}");
}
public static void PutStreamBySignedUrl(string bucketName, string key)
{
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
// Step1: Genereates url signature
var generatePresignedUriRequest = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Put);
var signedUrl = client.GeneratePresignedUri(generatePresignedUriRequest);
// Step2: Prepares for stream to be uploaded and sends out this request.
var buffer = Encoding.UTF8.GetBytes("Aliyun OSS SDK for C#");
using (var ms = new MemoryStream(buffer))
{
client.PutObject(signedUrl, ms);
}
Console.WriteLine("Get object by signatrue succeeded.");
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void PutLocalFileBySignedUrl(string bucketName, string key)
{
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
// Step1: Genereates url signature
var request = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Put);
request.Expiration = DateTime.Now.AddMinutes(5);
var signedUrl = client.GeneratePresignedUri(request);
// Step2: Prepares for filepath to be uploaded and sends out this request.
client.PutObject(signedUrl, fileToUpload);
Console.WriteLine("Put object by signatrue succeeded.");
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public Uri GenerateUri(OssClient client)
{
TkDebug.AssertArgumentNull(client, "client", this);
return(client.GeneratePresignedUri(BucketName, ObjectName,
DateTime.Now + AliyunOSSSetting.Current.UrlCacheTime));
}
public static void GenerateIamgeUri(string bucketName)
{
try
{
var process = "image/resize,m_fixed,w_100,h_100";
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddHours(1),
Process = process
};
// 产生带有签名的URI
var uri = client.GeneratePresignedUri(req);
Console.WriteLine("Generate Presigned Uri:{0} with process:{1} succeeded ", uri, process);
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public string GetFilePath(string objectname, DateTime expirationTime)
{
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
var uri = client.GeneratePresignedUri(bucketName, objectname, expirationTime);
var url = uri.AbsoluteUri;
return(url);
}
/// <summary>
/// 通过osskey后去ossURL
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public static String GetOSSUrl(String key)
{
GeneratePresignedUriRequest request;
request = new GeneratePresignedUriRequest(OssConfig.bucket, key);
var url = client.GeneratePresignedUri(request);
return(url.ToString());
}
/// <summary>
/// 获取图片
/// </summary>
/// <param name="bucketName"></param>
/// <param name="key"></param>
public static Uri Get(string bucketName, string key)
{
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddHours(1)
};
return(Client.GeneratePresignedUri(req));
}
/// <summary>
/// 获取文件下载地址
/// </summary>
/// <param name="ossPath">存储到oss的文件地址，如： 20181229/20181229155625123.png</param>
/// <param name="bucketName">系统所对应的bucketName</param>
public static Uri GetFileUrl(string ossPath, string bucketName = "")
{
var req = new GeneratePresignedUriRequest(bucketName, ossPath, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddHours(1)
};
OssClient client = new OssClient(AppConfig.GetSection("AliyunOSS:Endpoint"), AppConfig.GetSection("AliyunOSS:AccessKeyId"), AppConfig.GetSection("AliyunOSS:AccessKeySecret"));
return(client.GeneratePresignedUri(req));
}
public string GeneratePresignedUrl(string bucketName, string key)
{
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddMinutes(10)
};
var uri = _ossClient.GeneratePresignedUri(req);
return(uri.ToString());
}
public void AliGeneratePresignedUriTest()
{
string ossEndpoint = NTKeyword.CloudFileDomain;
string ossAccessKeyId = "ATAI4G7BGjsCjRF2ThyDdgBo"; // 假的
string ossAccessKeySecret = "A1VdRfHJ6k8NeklCtHjQlt7MYlRShE"; // 假的
var ossClient = new OssClient(ossEndpoint, ossAccessKeyId, ossAccessKeySecret);
var req = new GeneratePresignedUriRequest("ntminer", "helloworld.exe", SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddMinutes(10)
};
var uri = ossClient.GeneratePresignedUri(req);
Console.WriteLine(uri.ToString());
req = new GeneratePresignedUriRequest("ntminer", "helloworld.exe", SignHttpMethod.Get);
uri = ossClient.GeneratePresignedUri(req);
Console.WriteLine(uri.ToString());
TimeSpan ts = req.Expiration - DateTime.Now;
Console.WriteLine(ts.TotalSeconds);
// 默认是15分钟
Assert.IsTrue(ts.TotalSeconds > 14 * 60 && ts.TotalSeconds < 16 * 60);
}
/// <summary>
/// 获取图片地址
/// </summary>
/// <param name="accessKeyId">开发者秘钥对，通过阿里云控制台的秘钥管理页面创建与管理</param>
/// <param name="accessKeySecret">开发者秘钥对，通过阿里云控制台的秘钥管理页面创建与管理</param>
/// <param name="endpoint">Endpoint，创建Bucket时对应的Endpoint</param>
/// <param name="bucketName">Bucket名称，创建Bucket时对应的Bucket名称</param>
/// <param name="key">文件标识</param>
/// <param name="width">设置图片的宽度</param>
/// <param name="height">设置图片的高度</param>
/// <returns></returns>
public static string GetIamgeUri(string accessKeyId, string accessKeySecret, string endpoint, string bucketName, string key, float width = 100, float height = 100)
{
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
var process = $"image/resize,m_fixed,w_{width},h_{height}";
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddHours(64),
Process = process
};
var uri = client.GeneratePresignedUri(req);
return(uri.ToString());
}
public string GetImageUrl(string key, ImageSize imgSize)
{
if (!string.IsNullOrEmpty(key) && (key.StartsWith("http:") || key.StartsWith("https:")))
{
return(key); // 不是存储在阿里的Oss上的图片
}
try
{
var now = DateTime.Now;
var expire = new DateTime(now.Year, now.Month, now.Day, 0, 0, 0).AddYears(1);
var bucket = GetBucketName(AttachmentType.Picture);
switch (imgSize)
{
case ImageSize.Small:
{
var request = new GeneratePresignedUriRequest(bucket, key);
request.Expiration = expire;
request.Process = "image/resize,p_60";
return(client.GeneratePresignedUri(request)?.AbsoluteUri);
}
case ImageSize.Mid:
{
var request = new GeneratePresignedUriRequest(bucket, key);
request.Expiration = expire;
request.Process = "image/resize,p_50";
return(client.GeneratePresignedUri(request)?.AbsoluteUri);
}
default:
return(client.GeneratePresignedUri(bucket, key, expire)?.AbsoluteUri);
}
}
catch
{
return(string.Empty);
}
}
public Uri GetGeneratePresignedUri(string fileKey, DateTime expiration)
{
try
{
var req = new GeneratePresignedUriRequest(_bucketName, fileKey, SignHttpMethod.Get)
{
Expiration = expiration
};
return(_ossClient.GeneratePresignedUri(req));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 将文件上传存储空间的方法（本SDK是用阿里云OSS作为存储空间）。
/// 用户可以根据自身的情况重写该方法，重写时须注意该方法必须传入文件二进制流（byte[]）和文件名
/// </summary>
/// <param name="fontfile">文件二进制流</param>
/// <param name="objectName">文件名</param>
/// <returns></returns>
private string UploadOss(byte[] fontfile, string objectName)
{
string endpoint = _ossConfig.Endpoint;
string accessKeyId = _ossConfig.AccessKeyId;
string accessKeySecret = _ossConfig.AccessKeySecret;
string bucketName = _ossConfig.BucketName;
// 创建OSSClient实例
OssClient ossClient = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
var exists = ossClient.DoesBucketExist(bucketName);
if (exists)
{
ossClient.SetBucketAcl(bucketName, CannedAccessControlList.PublicRead);
ossClient.PutObject(bucketName, objectName, new MemoryStream(fontfile));
var expiration = DateTime.Now.AddDays(150);
var fontfileUrl = ossClient.GeneratePresignedUri(bucketName, objectName, expiration);
var fontfileString = fontfileUrl.ToString().Substring(0, fontfileUrl.ToString().IndexOf("?"));
Console.WriteLine("fontfileString: " + fontfileString);
return(fontfileString);
}
else
{
throw new OssException("bucket [" + bucketName + "] is not exist!");
}
}
catch (OssException oe)
{
Console.WriteLine("Caught an OSSException, which means your request made it to OSS, but was rejected with an error response for some reason.");
Console.WriteLine("Error Message: " + oe.Message);
Console.WriteLine("Error Code: " + oe.ErrorCode);
Console.WriteLine("Request ID: " + oe.RequestId);
Console.WriteLine("Host ID: " + oe.HostId);
throw oe;
}
catch (ClientException ce)
{
Console.WriteLine("Caught an ClientException, which means the client encountered a serious internal problem while trying to communicate with OSS, " +
"such as not being able to access the network.");
Console.WriteLine(ce.StackTrace);
throw ce;
}
}
public static void putObjectBySignedUrl()
{
const string accessKeyId = "<your access key id>";
const string accessKeySecret = "<your access key secret>";
const string endpoint = "<valid host name>";
const string bucketName = "<bucket name>";
const string key = "<object name>";
//const string postData = "<your data to upload>";
const string fileToUpload = "<file to upload>";
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
// Puts object by using URL Signature Style(two steps included).
// Step1: Genereates url signature
var generatePresignedUriRequest = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Put);
var signedUrl = client.GeneratePresignedUri(generatePresignedUriRequest);
// Step2: Prepares for stream to be uploaded and sends out this request.
//var buffer = Encoding.UTF8.GetBytes(postData);
//PutObjectResult result = null;
//using (var ms = new MemoryStream(buffer))
//{
// result = client.PutObject(signedUrl, ms);
//}
// Step2: Prepares for filepath to be uploaded and sends out this request.
var result = client.PutObject(signedUrl, fileToUpload);
Console.WriteLine("Uploaded File's ETag: {0}", result.ETag);
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void Test()
{
//.aliyuncs.com
/*client: new OSS({
* region: 'oss-cn-shenzhen',
* accessKeyId: 'LTAISgT8Qj4MCgAT',
* accessKeySecret: 'smtQr62zYeRTHDCZGZ0eseA8CDdBpk',
* // bucket: 'swyunfan'
* bucket: 'swyunfantesting'
* })*/
string endpoint = "oss-cn-shenzhen.aliyuncs.com";
string accessKeyId = "LTAISgT8Qj4MCgAT";
string accessKeySecret = "smtQr62zYeRTHDCZGZ0eseA8CDdBpk";
string bucketName;
string objectName;
string localFilename;
Aliyun.OSS.Common.ClientConfiguration configuration = new Aliyun.OSS.Common.ClientConfiguration();
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, configuration);
var list = client.ListBuckets();
var aa = client.GeneratePresignedUri("swyunfantesting", "test100818.jpg");
// 上传文件。
var result = client.PutObject("swyunfantesting", "test100818.jpg", @"G:\resource\e53c868ee9e8e7b28c424b56afe2066d.jpg");
var obj = client.GetObject("swyunfantesting", "test100818.jpg");
using (var requestStream = obj.Content)
{
byte[] buf = new byte[1024];
var fs = File.Open(@"G:\resource\12313.jpg", FileMode.OpenOrCreate);
var len = 0;
// 通过输入流将文件的内容读取到文件或者内存中。
while ((len = requestStream.Read(buf, 0, 1024)) != 0)
{
fs.Write(buf, 0, len);
}
fs.Close();
}
}
/// <inheritdoc/>
public async Task <string> GetBlobUrl(string containerName, string blobName, DateTime expiry,
bool isDownload = false,
string fileName = null, string contentType = null, BlobUrlAccess access = BlobUrlAccess.Read)
{
try
{
var httpMethod = SignHttpMethod.Get;
return(await Task.Run(() =>
{
switch (access)
{
case BlobUrlAccess.Read:
httpMethod = SignHttpMethod.Get;
break;
case BlobUrlAccess.All:
case BlobUrlAccess.Write:
httpMethod = SignHttpMethod.Put;
break;
case BlobUrlAccess.Delete:
httpMethod = SignHttpMethod.Delete;
break;
default:
throw new StorageException(StorageErrorCode.InvalidAccess.ToStorageError(),
new Exception("无效的访问凭据"));
}
var req = new GeneratePresignedUriRequest(containerName, blobName, httpMethod)
{
Expiration = expiry
};
var url = _ossClient.GeneratePresignedUri(req);
return url.AbsoluteUri;
}));
}
catch (Exception ex)
{
throw new StorageException(StorageErrorCode.PostError.ToStorageError(),
new Exception(ex.ToString()));
}
}
/// <summary>
/// Creates the BLOB credential.
/// </summary>
/// <param name="containerName">Name of the container.</param>
/// <param name="blobIdentifier">The BLOB identifier.</param>
/// <param name="expireOffsetInMinute">The expire offset in minute.</param>
/// <param name="method">The method.</param>
/// <param name="putUserMeta">The put user meta.</param>
/// <returns></returns>
private BinaryStorageActionCredential CreateBlobCredential(string containerName,
string blobIdentifier, int expireOffsetInMinute, SignHttpMethod method, Action <GeneratePresignedUriRequest> putUserMeta = null)
{
var expiredStamp = DateTime.UtcNow.AddMinutes(expireOffsetInMinute);
GeneratePresignedUriRequest presignRequest = new GeneratePresignedUriRequest(containerName, blobIdentifier);
presignRequest.Expiration = expiredStamp;
presignRequest.Method = method;
putUserMeta?.Invoke(presignRequest);
return(new BinaryStorageActionCredential
{
Container = containerName,
Identifier = blobIdentifier,
CredentialExpiredStamp = expiredStamp,
CredentialUri = client.GeneratePresignedUri(presignRequest).ToString()
});
}
//生成暂时带签名的URL
public static void GenerateIamgeUri()
{
var client = new OssClient("oss-cn-shenzhen.aliyuncs.com", "LTAId7dsrQHujhU5", "O3nQOqai4yXrvGCKNbvgrKuU8f7U7p");
try
{
var req = new GeneratePresignedUriRequest("igets", "igetsLogo.jpg", SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddSeconds(30 * 60),
};
// 产生带有签名的URI
var uri = client.GeneratePresignedUri(req);
Console.WriteLine("Uri:{0}", uri);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public string GetFileUrl(string fileName, int expiredMins = 60, bool isPrivate = false)
{
if (isPrivate)
{
DateTime expired = DateTime.Now.AddHours(expiredMins * 60);
var client = new OssClient(_endpoint, _accessKeyId, _accessKeySecret);
var buckName = isPrivate ? _bucketPrivate : _bucketPublic;
// var req = new GeneratePresignedUriRequest(buckName, fileName, SignHttpMethod.Get);
Uri uri = client.GeneratePresignedUri(buckName, fileName);
return(uri.ToString());
}
else
{
return("http://" + _publicHost + fileName);
}
}
/// <summary>
/// 获取阿里OSS的链接
/// </summary>
/// <param name="FileName"></param>
/// <returns></returns>
public string GetFileURL(string FileName)
{
//生成下载URL
var req = new GeneratePresignedUriRequest(Final.BucketName, FileName, SignHttpMethod.Get)
{
//设置访问链接失效时间20分钟
Expiration = DateTime.Now.AddMinutes(20)
};
//创建链接
var uri = Client.GeneratePresignedUri(req);
UriBuilder uriBuilder = new UriBuilder(uri)
{
Scheme = "https",
Port = 443
};
//将连接转换为string
return(uriBuilder.Uri.ToString());
}
public string GetUrl(string fullPath, FileAccessMode accessMode = FileAccessMode.Open)
{
if (fullPath.IsNull())
{
return(string.Empty);
}
if (fullPath.StartsWith("http:", StringComparison.OrdinalIgnoreCase) || fullPath.StartsWith("https:", StringComparison.OrdinalIgnoreCase))
{
return(fullPath);
}
//公开
if (accessMode == FileAccessMode.Open)
{
return($"{_config.Domain}{HttpUtility.UrlEncode(fullPath, Encoding.UTF8)}");
}
//私有
try
{
// 创建OSSClient实例。
var client = new OssClient(_config.Endpoint, _config.AccessKeyId, _config.AccessKeySecret);
// 生成签名URL
var req = new GeneratePresignedUriRequest(_config.BucketName, fullPath, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddHours(4)
};
var uri = client.GeneratePresignedUri(req);
return($"{_config.Domain}{uri.PathAndQuery}");
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}", ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
return(string.Empty);
}
/// <summary>
/// 获取图片uri
/// </summary>
/// <param name="keyname">上传图片的keyname</param>
/// <param name="process">需要对图片进行的操作，可空，eg:process = "image/resize,m_fixed,w_100,h_100"</param>
/// <returns></returns>
public string GetImgPath(string keyname, string process = null)
{
try
{
var req = new GeneratePresignedUriRequest(bucketname, key, SignHttpMethod.Get);
if (!string.IsNullOrWhiteSpace(process))
{
req.Process = process;
req.Expiration = DateTime.Now.AddSeconds(30 * 60);
}
// 产生带有签名的URI
var uri = client.GeneratePresignedUri(req);
return(uri.ToString());
}
catch (Exception)
{
throw new Exception("图片获取失败,key:" + keyname);
}
}
public ResponseRes requireResOss(string ossPath)
{
ResponseRes oss = new ResponseRes();
if (string.IsNullOrEmpty(ossPath))
{
throw new Exception("资源请求参数错误！");
}
if (OssClient.DoesObjectExist(_OssConfig.bucketName, ossPath))
{
var req = new GeneratePresignedUriRequest(_OssConfig.bucketName, ossPath, SignHttpMethod.Get);
var uri = _ossClient.GeneratePresignedUri(req);
oss.downloadUrl = uri.AbsoluteUri;
}
else
{
throw new Exception("来晚了。资源失效！");
}
return(oss);
}
/// <summary>
/// 获取图片地址
/// </summary>
/// <param name="accessKeyId">开发者秘钥对，通过阿里云控制台的秘钥管理页面创建与管理</param>
/// <param name="accessKeySecret">开发者秘钥对，通过阿里云控制台的秘钥管理页面创建与管理</param>
/// <param name="endpoint">Endpoint，创建Bucket时对应的Endpoint</param>
/// <param name="bucketName">Bucket名称，创建Bucket时对应的Bucket名称</param>
/// <param name="key">文件标识</param>
/// <param name="width">设置图片的宽度</param>
/// <param name="height">设置图片的高度</param>
/// <returns></returns>
public static string GetIamgeUri(string accessKeyId, string accessKeySecret, string endpoint, string bucketName, string key, float width = 100, float height = 100)
{
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
var process = $"image/resize,m_fixed,w_{width},h_{height}";
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get)
{
Expiration = DateTime.Now.AddHours(1),
Process = process
};
var uri = client.GeneratePresignedUri(req);
return(uri.ToString());
}
catch (OssException ex)
{
throw new Exception("阿里云请求异常", ex);
//LogHelper.LogException<OssException>($"Msg:{ex.Message};Code:{ex.ErrorCode};RequestID:{ex.RequestId};HostID:{ex.HostId}");
}
}
public static void getObjectBySignedUrl2()
{
const string accessKeyId = "<your access key id>";
const string accessKeySecret = "<your access key secret>";
const string endpoint = "<valid host name>";
const string bucketName = "<bucket name>";
const string key = "<object name>";
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
var metadata = client.GetObjectMetadata(bucketName, key);
var etag = metadata.ETag;
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get);
// Generates url signature for accessing specified object.
var uri = client.GeneratePresignedUri(req);
Console.WriteLine(uri.ToString());
OssObject ossObject = client.GetObject(uri);
var file = File.Open("<file to hold object content>", FileMode.OpenOrCreate);
Stream stream = ossObject.Content;
byte[] bytes = new byte[stream.Length];
stream.Read(bytes, 0, bytes.Length);
file.Write(bytes, 0, bytes.Length);
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void PutLocalFileBySignedUrl(string bucketName, string key)
{
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
// Step1: Genereates url signature
var request = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Put);
request.Expiration = DateTime.Now.AddMinutes(5);
var signedUrl = client.GeneratePresignedUri(request);
// Step2: Prepares for filepath to be uploaded and sends out this request.
client.PutObject(signedUrl, fileToUpload);
Console.WriteLine("Put object by signatrue succeeded.");
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void PutStreamBySignedUrl(string bucketName, string key)
{
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
// Step1: Genereates url signature
var generatePresignedUriRequest = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Put);
var signedUrl = client.GeneratePresignedUri(generatePresignedUriRequest);
// Step2: Prepares for stream to be uploaded and sends out this request.
var buffer = Encoding.UTF8.GetBytes("Aliyun OSS SDK for C#");
using (var ms = new MemoryStream(buffer))
{
client.PutObject(signedUrl, ms);
}
Console.WriteLine("Get object by signatrue succeeded.");
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void getObjectBySignedUrl2()
{
const string accessKeyId = "<your access key id>";
const string accessKeySecret = "<your access key secret>";
const string endpoint = "<valid host name>";
const string bucketName = "<bucket name>";
const string key = "<object name>";
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
var metadata = client.GetObjectMetadata(bucketName, key);
var etag = metadata.ETag;
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get);
// Generates url signature for accessing specified object.
var uri = client.GeneratePresignedUri(req);
Console.WriteLine(uri.ToString());
OssObject ossObject = client.GetObject(uri);
var file = File.Open("<file to hold object content>", FileMode.OpenOrCreate);
Stream stream = ossObject.Content;
byte[] bytes = new byte[stream.Length];
stream.Read(bytes, 0, bytes.Length);
file.Write(bytes, 0, bytes.Length);
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void getObjectBySignedUrl()
{
const string accessKeyId = "<your access key id>";
const string accessKeySecret = "<your access key secret>";
const string endpoint = "<valid host name>";
const string bucketName = "<bucket name>";
const string key = "<object name>";
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
var metadata = client.GetObjectMetadata(bucketName, key);
var etag = metadata.ETag;
var req = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get);
// Set optional properties(be blind to them usually)
req.AddQueryParam("param1", "value1");
req.ContentType = "text/html";
req.ContentMd5 = etag;
req.AddUserMetadata("mk1", "mv1");
req.AddUserMetadata("mk2", "mv2");
req.ResponseHeaders.CacheControl = "No-Cache";
req.ResponseHeaders.ContentEncoding = "utf-8";
req.ResponseHeaders.ContentType = "text/html";
// Generates url signature for accessing specified object.
var uri = client.GeneratePresignedUri(req);
Console.WriteLine(uri.ToString());
var webRequest = (HttpWebRequest)WebRequest.Create(uri);
webRequest.ContentType = "text/html";
webRequest.Headers.Add(HttpRequestHeader.ContentMd5, etag);
webRequest.Headers.Add("x-oss-meta-mk1", "mv1");
webRequest.Headers.Add("x-oss-meta-mk2", "mv2");
var resp = webRequest.GetResponse() as HttpWebResponse;
var output = resp.GetResponseStream();
var bufferSize = 2048;
var bytes = new byte[bufferSize];
try
{
var length = 0;
do
{
length = output.Read(bytes, 0, bufferSize);
// to do something with bytes...
} while (length > 0);
output.Close();
}
catch (Exception ex)
{
Console.WriteLine("ex : " + ex.Message);
}
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}
public static void putObjectBySignedUrl()
{
const string accessKeyId = "<your access key id>";
const string accessKeySecret = "<your access key secret>";
const string endpoint = "<valid host name>";
const string bucketName = "<bucket name>";
const string key = "<object name>";
//const string postData = "<your data to upload>";
const string fileToUpload = "<file to upload>";
OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
// Puts object by using URL Signature Style(two steps included).
// Step1: Genereates url signature
var generatePresignedUriRequest = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Put);
var signedUrl = client.GeneratePresignedUri(generatePresignedUriRequest);
// Step2: Prepares for stream to be uploaded and sends out this request.
//var buffer = Encoding.UTF8.GetBytes(postData);
//PutObjectResult result = null;
//using (var ms = new MemoryStream(buffer))
//{
// result = client.PutObject(signedUrl, ms);
//}
// Step2: Prepares for filepath to be uploaded and sends out this request.
var result = client.PutObject(signedUrl, fileToUpload);
Console.WriteLine("Uploaded File's ETag: {0}", result.ETag);
}
catch (OssException ex)
{
Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
Console.WriteLine("Failed with error info: {0}", ex.Message);
}
}